Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 1 | package eu.mulk.jgvariant.core; |
| 2 | |
| 3 | import static java.nio.ByteOrder.LITTLE_ENDIAN; |
| 4 | import static java.nio.charset.StandardCharsets.UTF_8; |
| 5 | import static org.junit.jupiter.api.Assertions.assertEquals; |
| 6 | |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 7 | import java.nio.ByteBuffer; |
| 8 | import java.util.List; |
| 9 | import java.util.Optional; |
| 10 | import org.junit.jupiter.api.Test; |
| 11 | |
| 12 | /** |
| 13 | * Tests based on the examples given in <a |
| 14 | * href="https://people.gnome.org/~desrt/gvariant-serialisation.pdf">~desrt/gvariant-serialisation.pdf</a>. |
| 15 | */ |
| 16 | class DecoderTest { |
| 17 | |
| 18 | @Test |
| 19 | void testString() { |
| 20 | var data = new byte[] {0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x00}; |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 21 | var decoder = Decoder.ofString(UTF_8); |
| 22 | assertEquals("hello world", decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 23 | } |
| 24 | |
| 25 | @Test |
| 26 | void testMaybe() { |
| 27 | var data = |
| 28 | new byte[] {0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x00, 0x00}; |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 29 | var decoder = Decoder.ofMaybe(Decoder.ofString(UTF_8)); |
| 30 | assertEquals(Optional.of("hello world"), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | @Test |
| 34 | void testBooleanArray() { |
| 35 | var data = new byte[] {0x01, 0x00, 0x00, 0x01, 0x01}; |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 36 | var decoder = Decoder.ofArray(Decoder.ofBoolean()); |
| 37 | assertEquals(List.of(true, false, false, true, true), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | @Test |
| 41 | void testStructure() { |
| 42 | var data = |
| 43 | new byte[] { |
| 44 | 0x66, 0x6F, 0x6F, 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, 0x04 |
| 45 | }; |
| 46 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 47 | record TestRecord(String s, int i) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 48 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 49 | var decoder = Decoder.ofStructure(TestRecord.class, Decoder.ofString(UTF_8), Decoder.ofInt()); |
| 50 | assertEquals(new TestRecord("foo", -1), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | @Test |
| 54 | void testComplexStructureArray() { |
| 55 | var data = |
| 56 | new byte[] { |
| 57 | 0x68, |
| 58 | 0x69, |
| 59 | 0x00, |
| 60 | 0x00, |
| 61 | (byte) 0xfe, |
| 62 | (byte) 0xff, |
| 63 | (byte) 0xff, |
| 64 | (byte) 0xff, |
| 65 | 0x03, |
| 66 | 0x00, |
| 67 | 0x00, |
| 68 | 0x00, |
| 69 | 0x62, |
| 70 | 0x79, |
| 71 | 0x65, |
| 72 | 0x00, |
| 73 | (byte) 0xff, |
| 74 | (byte) 0xff, |
| 75 | (byte) 0xff, |
| 76 | (byte) 0xff, |
| 77 | 0x04, |
| 78 | 0x09, |
| 79 | 0x15 |
| 80 | }; |
| 81 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 82 | record TestRecord(String s, int i) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 83 | |
| 84 | var decoder = |
| 85 | Decoder.ofArray( |
| 86 | Decoder.ofStructure( |
| 87 | TestRecord.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 88 | Decoder.ofString(UTF_8), |
| 89 | Decoder.ofInt().withByteOrder(LITTLE_ENDIAN))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 90 | assertEquals( |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 91 | List.of(new TestRecord("hi", -2), new TestRecord("bye", -1)), |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 92 | decoder.decode(ByteBuffer.wrap(data))); |
| 93 | } |
| 94 | |
| 95 | @Test |
| 96 | void testStringArray() { |
| 97 | var data = |
| 98 | new byte[] { |
| 99 | 0x69, 0x00, 0x63, 0x61, 0x6E, 0x00, 0x68, 0x61, 0x73, 0x00, 0x73, 0x74, 0x72, 0x69, 0x6E, |
| 100 | 0x67, 0x73, 0x3F, 0x00, 0x02, 0x06, 0x0a, 0x13 |
| 101 | }; |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 102 | var decoder = Decoder.ofArray(Decoder.ofString(UTF_8)); |
| 103 | assertEquals(List.of("i", "can", "has", "strings?"), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | @Test |
| 107 | void testNestedStructure() { |
| 108 | var data = |
| 109 | new byte[] { |
| 110 | 0x69, 0x63, 0x61, 0x6E, 0x00, 0x68, 0x61, 0x73, 0x00, 0x73, 0x74, 0x72, 0x69, 0x6E, 0x67, |
| 111 | 0x73, 0x3F, 0x00, 0x04, 0x0d, 0x05 |
| 112 | }; |
| 113 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 114 | record TestChild(byte b, String s) {} |
| 115 | record TestParent(TestChild tc, List<String> as) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 116 | |
| 117 | var decoder = |
| 118 | Decoder.ofStructure( |
| 119 | TestParent.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 120 | Decoder.ofStructure(TestChild.class, Decoder.ofByte(), Decoder.ofString(UTF_8)), |
| 121 | Decoder.ofArray(Decoder.ofString(UTF_8))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 122 | |
| 123 | assertEquals( |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 124 | new TestParent(new TestChild((byte) 0x69, "can"), List.of("has", "strings?")), |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 125 | decoder.decode(ByteBuffer.wrap(data))); |
| 126 | } |
| 127 | |
| 128 | @Test |
| 129 | void testSimpleStructure() { |
| 130 | var data = new byte[] {0x60, 0x70}; |
| 131 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 132 | record TestRecord(byte b1, byte b2) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 133 | |
| 134 | var decoder = |
| 135 | Decoder.ofStructure( |
| 136 | TestRecord.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 137 | Decoder.ofByte().withByteOrder(LITTLE_ENDIAN), |
| 138 | Decoder.ofByte().withByteOrder(LITTLE_ENDIAN)); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 139 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 140 | assertEquals(new TestRecord((byte) 0x60, (byte) 0x70), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | @Test |
| 144 | void testPaddedStructureRight() { |
| 145 | var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| 146 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 147 | record TestRecord(int b1, byte b2) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 148 | |
| 149 | var decoder = |
| 150 | Decoder.ofStructure( |
| 151 | TestRecord.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 152 | Decoder.ofInt().withByteOrder(LITTLE_ENDIAN), |
| 153 | Decoder.ofByte().withByteOrder(LITTLE_ENDIAN)); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 154 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 155 | assertEquals(new TestRecord(0x60, (byte) 0x70), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | @Test |
| 159 | void testPaddedStructureLeft() { |
| 160 | var data = new byte[] {0x60, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00}; |
| 161 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 162 | record TestRecord(byte b1, int b2) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 163 | |
| 164 | var decoder = |
| 165 | Decoder.ofStructure( |
| 166 | TestRecord.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 167 | Decoder.ofByte().withByteOrder(LITTLE_ENDIAN), |
| 168 | Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 169 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 170 | assertEquals(new TestRecord((byte) 0x60, 0x70), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | @Test |
| 174 | void testSimpleStructureArray() { |
| 175 | var data = |
| 176 | new byte[] { |
| 177 | 0x60, |
| 178 | 0x00, |
| 179 | 0x00, |
| 180 | 0x00, |
| 181 | 0x70, |
| 182 | 0x00, |
| 183 | 0x00, |
| 184 | 0x00, |
| 185 | (byte) 0x88, |
| 186 | 0x02, |
| 187 | 0x00, |
| 188 | 0x00, |
| 189 | (byte) 0xF7, |
| 190 | 0x00, |
| 191 | 0x00, |
| 192 | 0x00 |
| 193 | }; |
| 194 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 195 | record TestRecord(int b1, byte b2) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 196 | |
| 197 | var decoder = |
| 198 | Decoder.ofArray( |
| 199 | Decoder.ofStructure( |
| 200 | TestRecord.class, |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 201 | Decoder.ofInt().withByteOrder(LITTLE_ENDIAN), |
| 202 | Decoder.ofByte().withByteOrder(LITTLE_ENDIAN))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 203 | |
| 204 | assertEquals( |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 205 | List.of(new TestRecord(96, (byte) 0x70), new TestRecord(648, (byte) 0xf7)), |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 206 | decoder.decode(ByteBuffer.wrap(data))); |
| 207 | } |
| 208 | |
| 209 | @Test |
| 210 | void testByteArray() { |
| 211 | var data = new byte[] {0x04, 0x05, 0x06, 0x07}; |
| 212 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 213 | var decoder = Decoder.ofArray(Decoder.ofByte()); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 214 | |
| 215 | assertEquals( |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 216 | List.of((byte) 0x04, (byte) 0x05, (byte) 0x06, (byte) 0x07), |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 217 | decoder.decode(ByteBuffer.wrap(data))); |
| 218 | } |
| 219 | |
| 220 | @Test |
| 221 | void testIntegerArray() { |
| 222 | var data = new byte[] {0x04, 0x00, 0x00, 0x00, 0x02, 0x01, 0x00, 0x00}; |
| 223 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 224 | var decoder = Decoder.ofArray(Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 225 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 226 | assertEquals(List.of(4, 258), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | @Test |
| 230 | void testDictionaryEntry() { |
| 231 | var data = |
| 232 | new byte[] {0x61, 0x20, 0x6B, 0x65, 0x79, 0x00, 0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x06}; |
| 233 | |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 234 | record TestEntry(String key, int value) {} |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 235 | |
| 236 | var decoder = |
| 237 | Decoder.ofStructure( |
Matthias Andreas Benkard | 35f7a20 | 2021-12-14 19:29:26 +0100 | [diff] [blame^] | 238 | TestEntry.class, Decoder.ofString(UTF_8), Decoder.ofInt().withByteOrder(LITTLE_ENDIAN)); |
| 239 | assertEquals(new TestEntry("a key", 514), decoder.decode(ByteBuffer.wrap(data))); |
Matthias Andreas Benkard | 261532a | 2021-12-12 20:09:27 +0100 | [diff] [blame] | 240 | } |
| 241 | } |